Chinese state-sponsored hackers are once again attacking U.S. businesses following a three-month hiatus, and this time, they’re using different techniques. The news comes from Mandiant, the firm that revealed earlier this year that the Chinese military had a hacking division.

“They dialed it back for a little while, though other groups that also wear uniforms didn’t even bother to do that,” said Mandiant’s chief executive Kevin Mandia. “I think you have to view this as the new normal.”